Canbus Warranty Recall Fix

RSL · May 13, 2017

The dealer installed the Canbus fix this week. I asked what it would do for my bike since there has been no dash issues in the 6,000 miles of riding. They said it resolves a number of issues related to everything connected to the Canbus. So, OK fine, it can't hurt to add it was my thought.

Sure hope all the connections are waterproof as the procedure cuts a lot of wires.

philthymike · May 13, 2017

Possibly stupid question. Do they charge for this??
I was not provided any warrantee information with my used HS so I'm assuming I'm not covered.

dragoontwo · May 13, 2017

They shouldn't charge for it.

RSL · May 13, 2017

In the US this is a warranty recall, so regardless of mileage or age the work is done for free.

philthymike · May 13, 2017

That's a relief. Thanks!
Is this the "Christmas Tree of Death" issue I read about in another thread?

RSL · May 13, 2017

philthymike said:
That's a relief. Thanks!
Is this the "Christmas Tree of Death" issue I read about in another thread?

Yes. An issue that goes by many names on numerous threads and other forums.

The fix is supposed to resolve all Canbus communication issues, including fueling.

Monstard · May 13, 2017

Yes it's the christmas dash lights. Never had this on my bike but I received a text message from my dealer coupla days ago telling me to bring in the bike for recall involving installation of a CAN filter.

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philthymike · May 13, 2017

Just got off the phone with the dealership for my city only to find out the owner has retired and sold the franchise off to another dealership a few hours out into the sticks. Yay!
Be he said I'll need to get this recall done ASAP and it shouldn't cost anything. He also said I'll need new belts...

And a call to the new dealership informs me that they are not setup for servicing Ducati yet because their techs are still going to school for it and waiting on tools and equipment. Yay again!

kuksul08 · May 13, 2017

All the CANBUS filter is is a small TVS diode or choke designed to prevent electrical spikes from reaching the TJA1040T component (we think) on the dashboard, which controls CAN communications. It connects to the CAN-Hi, CAN-Lo, and CAN-Gnd of the dashboard. For some reason, our bikes do not have adequate filtering and there are large electrical spikes on the main power, ground, and some signal lines, possibly caused by the coils. My guess is inadequate shielding or insulation on the coils which sends some of the high voltage spark pulse into the low voltage control circuit.

Without the filter, over time the CAN controller chip is broken down since it's only rated for 5V or so. It could happen at 1,000 miles or 20,000 miles or never, depending on manufacturing variations and the severity of the voltage spikes on your particular bike.

No wires are cut for the installation, so no worries there. The only thing they cut is some rubber insulation around the harness, and then the filter wires plug-in and are heat shrinked to prevent them from coming apart. It shouldn't have any effect on fueling and you shouldn't notice a difference after the filter is installed.

bayotte · May 13, 2017

I wonder if this was the cause for the snowcat drama that happened a while back

BadToTheBown · May 13, 2017

What years are effected by the recall?

MartyGarrison · May 13, 2017

Just checked my 2016 939. No recall so they must have fixed it in the later models.

geo · May 14, 2017

13 /14 to stop dash failfrom voltage spikes . Had mine done 3000klm back no wire cutting . No problems dealer never knew about it until i gave him service recall number then they found after 3 attempts

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philthymike · May 14, 2017

It sounds as though they didn't design in sufficient reverse EMF protection from inductive loads on the electrical system such as motors, solenoids and ignition coils. Inductive kickback from these loads when they are de-energized can wreak havoc on semiconductors without proper clamping on their power rails. Wish I could get ahold of the schematics for my bike.

On the bright side I found another dealership with service closer than the one recommended to me. Only an hour away.

appliance821 · May 14, 2017

MartyGarrison said:
Just checked my 2016 939. No recall so they must have fixed it in the later models.

Never trust the website recall search. Call your dealer and ask.

kuksul08 · May 14, 2017

philthymike said:
It sounds as though they didn't design in sufficient reverse EMF protection from inductive loads on the electrical system such as motors, solenoids and ignition coils. Inductive kickback from these loads when they are de-energized can wreak havoc on semiconductors without proper clamping on their power rails. Wish I could get ahold of the schematics for my bike.

On the bright side I found another dealership with service closer than the one recommended to me. Only an hour away.

Here ya go!
https://www.dropbox.com/s/8l0zvmv6g8mt4oj/Wiring Diagram.pdf?dl=0

porkrind · May 14, 2017

appliance821 said:
Never trust the website recall search. Call your dealer and ask.

Yes. I don't know about this specific case, but a real recall is serious NHTSA monitored and mandated business. Lots of the fixes that we call recalls here are actually just TSBs, still done free and often quite important, but will never show up as a true recall.

dragoontwo · May 14, 2017

appliance821 said:
Never trust the website recall search. Call your dealer and ask.

porkrind said:
Yes. I don't know about this specific case, but a real recall is serious NTSB monitored and a dated business. Lots of the fixes that we call recalls here are actually just TSBs, still done free and often quite important, but will never show up as a true recall.

What these guys said.

MartyGarrison · May 14, 2017

I'll ask the dealer when I take the 939 in for the 600 mile service.

cubizme · May 14, 2017

philthymike said:
It sounds as though they didn't design in sufficient reverse EMF protection from inductive loads on the electrical system such as motors, solenoids and ignition coils. Inductive kickback from these loads when they are de-energized can wreak havoc on semiconductors without proper clamping on their power rails. Wish I could get ahold of the schematics for my bike.

On the bright side I found another dealership with service closer than the one recommended to me. Only an hour away.

Hi,

I think you are right ! I wonder the CAN filter only protects dashboard!!! My bike installed the Can Filter, after 2 days error "CAN line" again, I checked everything, finally I found the ECU was dead ! So I think M.A.E makes the CAN filter to protect only their dashboard !
So now I don't care about CAN filter anymore, the best way I can do that is find the exactly issue which detroy can bus system!

Could we find the problem together? Any information will be appreciated!

Ps: when I say the Can filter only protect dashboard, I mean the transient voltage could go anywhere, but now the dashboard built the block gate (CAN filter), so the transient voltage will go to the ECU where end of the can bus ! ( ECU & dashboard are ends of can bus with 120ohms )

Canbus Warranty Recall Fix

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